Heat resistant separation fabric

Abstract

Heat resistant separation fabric consisting out of yarns, wherein the yarns comprise metal fibers; wherein the heat resistant fabric comprises boron nitride particles distributed throughout the complete thickness of the fabric; wherein boron nitride particles are present between metal fibers in the yarns; wherein the amount of the boron nitride particles present on the surface of the fabric is not more than the amount of the boron nitride particles present in the bulk of the fabric.

The invention claimed is: 
     
       1. A heat resistant separation fabric comprising yarns,
 wherein the yarns comprise metal fibers; 
 wherein the heat resistant fabric comprises boron nitride particles distributed throughout the complete thickness of the fabric; 
 wherein boron nitride particles are present between metal fibers in the yarns; 
 wherein the amount of the boron nitride particles present on the surface of the fabric is less than the amount of the boron nitride particles present in the bulk of the fabric; 
 wherein the boron nitride particles are bonded onto the surface of the metal fibers by means of an aluminium phosphate; and 
 wherein the heat resistant separation fabric contains boron nitride and aluminium phosphate respectively in a range of 0.01 wt % to 1 wt %. 
 
     
     
       2. The heat resistant separation fabric according to  claim 1 , wherein the yarns are spun, filament or texturized yarns. 
     
     
       3. The heat resistant separation fabric according to  claim 1 , wherein all fibers in the yarns are stainless steel fibers. 
     
     
       4. The heat resistant separation fabric according to  claim 1 , wherein the heat resistant separation fabric is a woven fabric, a knitted fabric or a braided fabric. 
     
     
       5. The heat resistant separation fabric according to  claim 1 , wherein the particle size of the boron nitride particles is in the range of 1 nm to 10 μm. 
     
     
       6. The heat resistant separation fabric according to  claim 1 , wherein the boron nitride particles comprise boron nitride in the hexagonal crystalline form. 
     
     
       7. The heat resistant separation fabric according to  claim 1 , wherein the particle size of the boron nitride particles is in the range of 100 nm to 10 μm. 
     
     
       8. A mould for bending car glass products or mirrors, wherein a surface of the mould making contact with hot glass or mirrors is covered by the heat resistant separation fabric as in  claim 1 . 
     
     
       9. A process of bending car glass products or mirrors, wherein a mould is used as in  claim 8 , wherein the temperature of the hot glass in contact with the heat resistant separation fabric is in a range between 600° C. to 800° C. 
     
     
       10. A roll of a heat resistant separation fabric, comprising
 the heat resistant separation fabric as in  claim 1 ; and 
 a core onto which the heat resistant fabric is wound in a multiple number of layers.